Longman\TelegramBot\Request::answerCallbackQuery PHP Method

    public static function answerCallbackQuery(array $data)
    {
        return self::send('answerCallbackQuery', $data);
    }

 /**
  * {@inheritdoc}
  */
 public function execute()
 {
     $update = $this->getUpdate();
     $callback_query = $update->getCallbackQuery();
     $callback_query_id = $callback_query->getId();
     $callback_data = $callback_query->getData();
     $data['callback_query_id'] = $callback_query_id;
     if ($callback_data == 'thumb up') {
         $data['text'] = 'Hello World!';
         $data['show_alert'] = true;
     } else {
         $data['text'] = 'Hello World!';
         $data['show_alert'] = false;
     }
     return Request::answerCallbackQuery($data);
 }